Question

What is the role of the centrosome?

Answer 1

Centromere:

A centrosome is a structure that is involved in the process of cell division.

The role of the centrosome is as follows –

1. Centrioles during cell division move apart and from the aster fibres.
2. In eukaryotic cells, the centrosome is the main microtubule-organizing centre (MTOC), comprising centrioles wrapped by the PCM (pericentriolar material).
3. The ability of centrosomes to arrange microtubule arrays is based on their capability to anchor, nucleate and release the microtubules.
4. In various species, the spindles could form without centrosomes as a result of the chromosome-mediated microtubule nucleation pathways.
5. But, when centrosomes are absent, the fidelity of cell division reduces.
6. Centrioles are involved in the formation of flagella and cilia in lower entities.
7. Asters form the poles, organizing the formation of the spindle that helps in the separation and movement of chromosomes towards the respective poles.
8. One of the centrioles produces tail fibres in the spermatozoa.